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In a random sample of 18 people, the mean commute time to work was 335 minutes and the standard deviation was 7.1 minutes. Assume the population is normall distributed and use a t-distribution to construct a 80% confidence interval for the population mean . What is the margin of error of ? Interpret the results The confidence interval for the population mean us (315 3550 (Round to one decimal place as needed) The margin of error of s (Round to one decimal place as needed) Interpret the results A. It can be said that 80% of people have a commute time between the bounds of the confidence interval B. a large sample of people are taken approximately 80% of them will have commute times between the bounds of the confidence i the confidence interval C. With 80% confidence, it can be said that the population mean commute time is between the bounds a D. With 80% confidence, it can be said that the commute time between the bounds of the confidence interval

In a random sample of 18 people, the mean commute time to work was 335 minutes and the standard deviation was 7.1 minutes. Assume the population is normall distributed and use a t-distribution to construct a 80% confidence interval for the population mean . What is the margin of error of ? Interpret the results The confidence interval for the population mean us (315 3550 (Round to one decimal place as needed) The margin of error of s (Round to one decimal place as needed) Interpret the results A. It can be said that 80% of people have a commute time between the bounds of the confidence interval B. a large sample of people are taken approximately 80% of them will have commute times between the bounds of the confidence i the confidence interval C. With 80% confidence, it can be said that the population mean commute time is between the bounds a D. With 80% confidence, it can be said that the commute time between the bounds of the confidence interval

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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K In a random sample of 18 people, the mean commute time to work was 33.5 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean . What is the margin of error of ? Interpret the results The confidence interval for the population mean is (315 35.5) (Round to one decimal place as needed) The margin of error of us 2 (Round to one decimal place as needed) Interpret the results OA. It can be said that 80% of people have a commute time between the bounds of the confidence interval OB. If a large sample of people are taken approximately 80% of them will have commute times between the bounds of the confidence interval c. With 80% confidence, it can be said that the population mean commute time is between the bounds of the confidence interval OD. With 80% confidence, it can be said that the commute time is between the bounds of the confidence interval
Transcribed Image Text:K In a random sample of 18 people, the mean commute time to work was 33.5 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean . What is the margin of error of ? Interpret the results The confidence interval for the population mean is (315 35.5) (Round to one decimal place as needed) The margin of error of us 2 (Round to one decimal place as needed) Interpret the results OA. It can be said that 80% of people have a commute time between the bounds of the confidence interval OB. If a large sample of people are taken approximately 80% of them will have commute times between the bounds of the confidence interval c. With 80% confidence, it can be said that the population mean commute time is between the bounds of the confidence interval OD. With 80% confidence, it can be said that the commute time is between the bounds of the confidence interval
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